Makes Visual Editor edit box blank

When I work on the Text tab, I can add [br] and it works beautifully, just as advertised. But when I click on the Visual tab, the edit box is empty – for every page I tried. Then I went into the Simple Breaks settings screen and unchecked all the boxes and the Visual edit box started working again. Hmm…

http://ww.wp.xz.cn/plugins/simple-breaks/